This article describes the options available to deploy different
Microsoft Office 2007 suites to the same computer and includes
procedural information for each option: side-by-side and
uninstall-install. Although this process might not be needed by
most organizations, it can be appropriate in some scenarios. For
example, departments in an organization that currently have
Microsoft Office Standard 2007 installed on their computers might
now need applications available in Microsoft Office Professional
2007, such as Microsoft Office Access 2007. For a list of the
applications that are included in the different Office 2007 suites,
see Microsoft Office
Suites (http://go.microsoft.com/fwlink/?LinkId=157865).

Overview

There are two primary ways to achieve the goal of moving from
one Office 2007 suite to another within the same version, such as
moving from Office Standard 2007 to Office Professional 2007. The
first option is to leave the existing Office suite on the computer
while the new suite is installed. This is known as a side-by-side
installation. The second option is to uninstall the existing Office
suite and then install the different Office suite. Each of these
options has advantages and disadvantages. Regardless of the option
chosen, you can use any of the supported deployment options and
methods, such as silent installation.

Advantages and disadvantages

The advantages and disadvantages for the side-by-side
installation and the uninstall-install option are listed in the
following tables.

A copy of the compressed source files for the existing Office
products remains in the Local Install Source (LIS) on the targeted
computers.

Only source files of the new product applications are copied to
the LIS.

Uninstalling the original Office suite removes the application
shortcuts for applications that are shared between the original
suite and the new suite. However, these shortcuts are restored
after the /repair startup command-line option is run on the
new suite.

Uninstall-install

Advantage

Disadvantage

Uninstalling first can be an advantage if disk space is limited
on targeted computer or computers.

Application unavailability between uninstalling the original
suite and installing the new suite.

Additional network bandwidth usage when the new suite and
updates are deployed.

Computer restart required after uninstalling the original suite
and installing the new suite.

Important:

Before moving from one Office suite to another within the same
version, verify that the correct product licensing requirements
have been met. For more information about licensing, see Microsoft Volume
Licensing (http://go.microsoft.com/fwlink/?LinkId=155897) and
Emma
Explains Microsoft Licensing in Depth!
(http://go.microsoft.com/fwlink/?LinkId=157710).

For purposes of description, the example of moving from Office
Standard 2007 to Office Professional 2007 is used in the procedures
for both options: side-by-side and uninstall-install.

Side-by-side

The following table highlights the process and references for a
side-by-side installation, which includes the following steps:

Leave Office Standard 2007 on targeted computer or
computers.

Customize Office Professional 2007.

Deploy and install Office Professional 2007.

Uninstall Office Standard 2007.

Repair Office Professional 2007.

Whether you move from a suite that contains fewer applications
(such as Office Standard) to a suite that contains more
applications (such as Office Professional) — or the other way
around — the behavior is the same. For example, the copy of
the compressed source files for the existing Office products
remains in the LIS on the targeted computers. The product IDs for
both installed suites are unique and exist until one of the suites
is uninstalled. For more information about product code IDs, see
Description
of the numbering scheme for product code GUIDs in 2007 Office
suites and programs
(http://go.microsoft.com/fwlink/?LinkId=157978).

Step

Reference

1. Leave the existing Office suite, which in this example
is Office Standard 2007, on the targeted computer or computers.

2. Customize the new Office suite, which in this example is
Office Professional 2007.

Important:

When you customize setup for Office Professional 2007, you have
to select the programs that you want to keep from Office Standard
2007. For example, if you installed Microsoft Office Word 2007 and
Microsoft Office Excel 2007 from Office Standard 2007 and want to
continue to use them, you have to select Office Word 2007 and
Office Excel 2007 during the customization for Office
Professional — in addition to any new programs that you add,
such as Microsoft Office Access.

4. Uninstall Office Standard 2007. You can uninstall an
Office 2007 suite either through the Windows UI (click Control
Panel, and then click Add/Remove Programs) or by using
the /uninstall command-line option with Setup.exe.

5. Repair Office Professional 2007. You can repair an
Office 2007 suite either through the Windows UI (click Control
Panel, and then click Add or Remove Programs) or by
using the /repair command-line option with Setup.exe.

3. Customize the new Office suite, which in this example is
Office Professional 2007.

Important:

When you customize setup for Office Professional 2007, you have
to select the programs that you want to keep from Office Standard
2007. For example, if you installed Office Word 2007 and Office
Excel 2007 from Office Standard 2007 and want to continue to use
them, you have to select Office Word 2007 and Office Excel 2007
during the customization for Office Professional — in addition
to any new programs that you add, such as Office Access.